eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/handler/alignmenteditor/ToggleInsertOverwriteHandler.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.editor.handler.alignmenteditor;
  11
  12
  13 import java.util.Map;
  14
  15 import org.eclipse.core.commands.AbstractHandler;
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.jface.resource.ImageDescriptor;
  19 import org.eclipse.ui.IEditorPart;
  20 import org.eclipse.ui.PlatformUI;
  21 import org.eclipse.ui.commands.ICommandService;
  22 import org.eclipse.ui.commands.IElementUpdater;
  23 import org.eclipse.ui.menus.UIElement;
  24
  25 import eu.etaxonomy.taxeditor.editor.handler.HandlerTools;
  26 import eu.etaxonomy.taxeditor.editor.molecular.AlignmentEditor;
  27 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  28
  29
  30
  31 /**
  32  * Switches an {@link AlignmentEditor} between insertion and overwrite mode.
  33  *
  34  * @author Ben Stöver
  35  * @date 04.12.2014
  36  */
  37 public class ToggleInsertOverwriteHandler extends AbstractHandler implements IElementUpdater {
  38         public static final String COMMAND_ID =
  39                         "eu.etaxonomy.taxeditor.editor.molecular.AlignmentEditor.toggleInsertOverwrite";
  40
  41
  42     private final ImageDescriptor INSERT_DESCRIPTOR = HandlerTools.createImageDescriptor("insert-16x16.png");
  43     private final ImageDescriptor OVERWRITE_DESCRIPTOR = HandlerTools.createImageDescriptor("overwrite-16x16.png");
  44
  45
  46     @Override
  47         public Object execute(ExecutionEvent event) throws ExecutionException {
  48         IEditorPart activeEditor = AbstractUtility.getActiveEditor();
  49         if (activeEditor instanceof AlignmentEditor) {
  50             ((AlignmentEditor)activeEditor).toggleInsertOverwrite();
  51         }
  52         return null;
  53         }
  54
  55
  56         @Override
  57         public void updateElement(UIElement element, @SuppressWarnings("rawtypes") Map parameters) {
  58         IEditorPart activeEditor = AbstractUtility.getActiveEditor();
  59                 if (activeEditor instanceof AlignmentEditor) {
  60                         if (((AlignmentEditor)activeEditor).isInsertMode()) {
  61                             element.setIcon(INSERT_DESCRIPTOR);
  62                                 element.setText("INS");
  63                                 element.setTooltip("Click to switch to overwrite mode");
  64                         }
  65                         else {
  66                 element.setIcon(OVERWRITE_DESCRIPTOR);
  67                                 element.setText("OVR");
  68                                 element.setTooltip("Click to switch to insertion mode");
  69                         }
  70             ((ICommandService)PlatformUI.getWorkbench().getService(ICommandService.class)).refreshElements(
  71                     ToggleLeftRightInsertionHandler.COMMAND_ID, null);
  72                 }
  73         }
  74 }